According to Article 13 Law on Entry, Exit, Transit, and Residence of Foreigners in Vietnam regulates on unilateral visa exemption decisions for citizens of a country must meet the following conditions:

Unilateral visa exemption

1. A decision to unilaterally exempt visas for citizens of a country must meet all of the following conditions:

a) Have diplomatic relations with Vietnam;

b) In accordance with Vietnam's socio-economic development and foreign policy in each period;

c) Do not harm Vietnam's national defense, security, social order and safety.

2. Unilateral visa exemption decisions are valid for no more than 5 years and can be considered for extension. The unilateral visa exemption decision will be canceled if the conditions specified in Clause 1 of this Article are not met.

3. Pursuant to the provisions of this Article, the Government decides to unilaterally exempt visas for a limited time for each country.

Besides, according to Article 1 Resolution No. 32/NQ-CP 2022, modified byArticle 1 Resolution No. 128/NQ-CP 2023 (Effective from August 15, 2023) stipulates as follows:

Article 1. Visa exemption for citizens of the following countries: Federal Republic of Germany, French Republic, Italian Republic, Kingdom of Spain, United Kingdom of Great Britain and Northern Ireland, United Nations Russia, Japan, Republic of Korea, Kingdom of Denmark, Kingdom of Sweden, Kingdom of Norway, Republic of Finland and Republic of Belarus with a temporary stay period of 45 days from the date of entry entry, regardless of passport type or purpose of entry, on the basis of meeting all entry conditions according to the provisions of Vietnamese law.

According to the above regulations, when British citizens enter Vietnam with a temporary residence period of 45 days from the date of entry, regardless of passport type or purpose of entry, on the basis of fully meeting the conditions according to the regulations. regulations of Vietnamese law are exempt from visa.